I think if Clinton wins, as is likely, it will be steady sailing. She's not out to change the world, or even the USA much. which is a pity because there are many things about the USA that I think need changing. The gap between rich and poor, and all the things that keep that widening. The shootings, the schools etc.
Trump, to my mind, says he'll make America great again but his policies, such as they are, hold little hope of that occurring. To my mind, his past experience and behaviour so far will lead to the opposite effect. I would see scandal and impeachment as a high likelihood, and the equivalent of national bankruptcy, and certainly war and internal strife. The burden would be borne by those on the bottom.
For the traveller, the USD dropping. Good for us, but at the cost of decreased security - higher chances of being mugged, baggage pilfered and so on. Not to mention riots and disturbances. There's a number of these events each year, but if tension grows, they'll be more frequent.
A more insular USA would likely impose more checks and restrictions on visitors. More scrutiny on arrival, higher fees, the ESTA scheme being wound back further and so on.
Anyone with a Hispanic name, Mexican passport, or some sign of Islamic devotion (Koran in luggage, facial hair, olive skin, foreign name) would be denied entry and charged a wall fee.
